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Vulnerability record · CVE-2018-0472 · published 5 October 2018

CVE-2018-0472: Cisco ios xe improper input validation vulnerability

Cisco · Ios Xe

A vulnerability in the IPsec driver code of multiple Cisco IOS XE Software platforms and the Cisco ASA 5500-X Series Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to cause the device to reload. The vulnerability is due to improper processing of malformed IPsec Authentication Header (AH) or Encapsulating Security Payload (ESP) packets. An attacker could exploit this vulnerability by sending malformed IPsec packets to be processed by an affected device. An exploit could allow the attacker to cause a reload of the affected device.

8.6 CVSS 3.0 High EPSS 16% · top 3.2% CWE-20 · Improper input validation
8.6CVSS 3.0 base score, v2 7.8
16%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

Description

A vulnerability in the IPsec driver code of multiple Cisco IOS XE Software platforms and the Cisco ASA 5500-X Series Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to cause the device to reload. The vulnerability is due to improper processing of malformed IPsec Authentication Header (AH) or Encapsulating Security Payload (ESP) packets. An attacker could exploit this vulnerability by sending malformed IPsec packets to be processed by an affected device. An exploit could allow the attacker to cause a reload of the affected device.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/105418 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1041735 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1041737 Third Party AdvisoryVDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-19-094-04
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-ipsec Vendor Advisory
http://www.securityfocus.com/bid/105418 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1041735 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1041737 Third Party AdvisoryVDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-19-094-04
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-ipsec Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-0472), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.